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Hydrograph River at a Glance Download
Atchafalaya River at Morgan City Stage (ft)Highest Observation: 3.82 ft at 8:00PM May 26, 2023Observed: 3.78 ft at 9:00PM May 26, 2023Observed: 3.78 ft at 10:00PM May 26, 2023Observed: 3.78 ft at 11:00PM May 26, 2023Observed: 3.76 ft at 12:00AM May 27, 2023Observed: 3.68 ft at 1:00AM May 27, 2023Observed: 3.66 ft at 2:00AM May 27, 2023Observed: 3.63 ft at 3:00AM May 27, 2023Observed: 3.58 ft at 4:00AM May 27, 2023Observed: 3.56 ft at 5:00AM May 27, 2023Observed: 3.54 ft at 6:00AM May 27, 2023Observed: 3.54 ft at 7:00AM May 27, 2023Observed: 3.47 ft at 8:00AM May 27, 2023Observed: 3.52 ft at 9:00AM May 27, 2023Observed: 3.57 ft at 10:00AM May 27, 2023Observed: 3.61 ft at 11:00AM May 27, 2023Observed: 3.67 ft at 12:00PM May 27, 2023Observed: 3.7 ft at 1:00PM May 27, 2023Observed: 3.73 ft at 2:00PM May 27, 2023Observed: 3.7 ft at 3:00PM May 27, 2023Observed: 3.69 ft at 4:00PM May 27, 2023Observed: 3.71 ft at 5:00PM May 27, 2023Observed: 3.72 ft at 6:00PM May 27, 2023Observed: 3.65 ft at 7:00PM May 27, 2023Observed: 3.68 ft at 8:00PM May 27, 2023Observed: 3.72 ft at 9:00PM May 27, 2023Observed: 3.64 ft at 10:00PM May 27, 2023Observed: 3.7 ft at 11:00PM May 27, 2023Observed: 3.68 ft at 12:00AM May 28, 2023Observed: 3.72 ft at 1:00AM May 28, 2023Observed: 3.68 ft at 2:00AM May 28, 2023Observed: 3.67 ft at 3:00AM May 28, 2023Observed: 3.68 ft at 4:00AM May 28, 2023Observed: 3.62 ft at 5:00AM May 28, 2023Observed: 3.63 ft at 6:00AM May 28, 2023Observed: 3.62 ft at 7:00AM May 28, 2023Observed: 3.67 ft at 8:00AM May 28, 2023Observed: 3.59 ft at 9:00AM May 28, 2023Observed: 3.61 ft at 10:00AM May 28, 2023Observed: 3.6 ft at 11:00AM May 28, 2023Observed: 3.64 ft at 12:00PM May 28, 2023Observed: 3.7 ft at 1:00PM May 28, 2023Observed: 3.7 ft at 2:00PM May 28, 2023Observed: 3.78 ft at 3:00PM May 28, 2023Observed: 3.75 ft at 4:00PM May 28, 2023Observed: 3.8 ft at 5:00PM May 28, 2023Observed: 3.66 ft at 6:00PM May 28, 2023Observed: 3.63 ft at 7:00PM May 28, 2023Observed: 3.68 ft at 8:00PM May 28, 2023Observed: 3.66 ft at 9:00PM May 28, 2023Observed: 3.63 ft at 10:00PM May 28, 2023Observed: 3.63 ft at 11:00PM May 28, 2023Observed: 3.62 ft at 12:00AM May 29, 2023Observed: 3.61 ft at 1:00AM May 29, 2023Observed: 3.62 ft at 2:00AM May 29, 2023Observed: 3.6 ft at 3:00AM May 29, 2023Observed: 3.59 ft at 4:00AM May 29, 2023Observed: 3.59 ft at 5:00AM May 29, 2023Observed: 3.61 ft at 6:00AM May 29, 2023Observed: 3.62 ft at 7:00AM May 29, 2023Observed: 3.61 ft at 8:00AM May 29, 2023Observed: 3.55 ft at 9:00AM May 29, 2023Observed: 3.62 ft at 10:00AM May 29, 2023Observed: 3.7 ft at 11:00AM May 29, 2023Observed: 3.64 ft at 12:00PM May 29, 2023Observed: 3.68 ft at 1:00PM May 29, 2023Observed: 3.72 ft at 2:00PM May 29, 2023Observed: 3.74 ft at 3:00PM May 29, 2023Observed: 3.74 ft at 4:00PM May 29, 2023Observed: 3.74 ft at 5:00PM May 29, 2023Observed: 3.66 ft at 6:00PM May 29, 2023Highest Forecast: 3.7 ft 1:00AM May 30, 2023Highest Forecast: 3.7 ft 7:00AM May 30, 2023Forecast: 3.6 ft 1:00PM May 30, 2023Forecast: 3.6 ft 7:00PM May 30, 2023Forecast: 3.6 ft 1:00AM May 31, 2023Forecast: 3.6 ft 7:00AM May 31, 2023Forecast: 3.6 ft 1:00PM May 31, 2023Forecast: 3.6 ft 7:00PM May 31, 2023Forecast: 3.5 ft 1:00AM Jun 01, 2023Forecast: 3.5 ft 7:00AM Jun 01, 2023Forecast: 3.5 ft 1:00PM Jun 01, 2023Forecast: 3.5 ft 7:00PM Jun 01, 2023Forecast: 3.5 ft 1:00AM Jun 02, 2023Forecast: 3.5 ft 7:00AM Jun 02, 2023Forecast: 3.5 ft 1:00PM Jun 02, 2023Forecast: 3.4 ft 7:00PM Jun 02, 2023Forecast: 3.4 ft 1:00AM Jun 03, 2023Forecast: 3.4 ft 7:00AM Jun 03, 2023Forecast: 3.4 ft 1:00PM Jun 03, 2023Forecast: 3.4 ft 7:00PM Jun 03, 2023Forecast: 3.4 ft 1:00AM Jun 04, 2023Forecast: 3.3 ft 7:00AM Jun 04, 2023Forecast: 3.3 ft 1:00PM Jun 04, 2023Forecast: 3.3 ft 7:00PM Jun 04, 2023Forecast: 3.3 ft 1:00AM Jun 05, 2023Forecast: 3.3 ft 7:00AM Jun 05, 2023Forecast: 3.3 ft 1:00PM Jun 05, 2023Forecast: 3.3 ft 7:00PM Jun 05, 2023Forecast: 3.2 ft 1:00AM Jun 06, 2023Forecast: 3.2 ft 7:00AM Jun 06, 2023Forecast: 3.2 ft 1:00PM Jun 06, 2023Forecast: 3.2 ft 7:00PM Jun 06, 2023Forecast: 3.2 ft 1:00AM Jun 07, 2023Forecast: 3.2 ft 7:00AM Jun 07, 2023Forecast: 3.2 ft 1:00PM Jun 07, 2023Forecast: 3.1 ft 7:00PM Jun 07, 2023Forecast: 3.1 ft 1:00AM Jun 08, 2023Forecast: 3.1 ft 7:00AM Jun 08, 2023Forecast: 3.1 ft 1:00PM Jun 08, 2023Forecast: 3.1 ft 7:00PM Jun 08, 2023Forecast: 3.1 ft 1:00AM Jun 09, 2023Forecast: 3.1 ft 7:00AM Jun 09, 2023Forecast: 3.1 ft 1:00PM Jun 09, 2023Forecast: 3.1 ft 7:00PM Jun 09, 2023Forecast: 3.1 ft 1:00AM Jun 10, 2023Forecast: 3.1 ft 7:00AM Jun 10, 2023Forecast: 3.1 ft 1:00PM Jun 10, 2023Forecast: 3 ft 7:00PM Jun 10, 2023Forecast: 3 ft 1:00AM Jun 11, 2023Forecast: 3 ft 7:00AM Jun 11, 2023Forecast: 3 ft 1:00PM Jun 11, 2023Forecast: 3 ft 7:00PM Jun 11, 2023Forecast: 3 ft 1:00AM Jun 12, 2023Forecast: 3 ft 7:00AM Jun 12, 2023MCGL1(plotting HGIRG) Graph Created (7:25PM May 29, 2023)ObservedForecast (issued 9:46AM May 29)Latest observed value: 3.66 ft at 6:00 PM CDT 29-May-2023. Flood Stage is 6 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Atchafalaya River at Morgan City are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 7
Flood Stage: 6
Action Stage: 4
Low Stage (in feet): 0

Historic Crests
(1) 10.53 ft on 05/28/1973
(2) 10.35 ft on 05/29/2011
(3) 10.06 ft on 07/13/2019
(4) 8.46 ft on 06/27/1957
(5) 8.29 ft on 03/15/2019
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.93 ft on 04/13/2020 (P)
(2) 10.06 ft on 07/13/2019
(3) 8.29 ft on 03/15/2019
(4) 7.12 ft on 03/30/2018
(5) 7.18 ft on 06/03/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -5.40 ft on 08/25/1926
(2) -2.70 ft on 12/21/1924
(3) -2.32 ft on 10/18/1948
Show More Low Water Records
Zoom Level:16
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Gauge LocationGauge Map Marker
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20 There is a catastrophic flood threat. Evacuation of the cities of Berwick and Morgan City is strongly recommended. Flood walls protect the cities to an elevation of 21 feet.
12 There is a major flood threat. Back water flooding of Bayou Bouef will cause damage east of Morgan City to the community of Amelia. Structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced.
9 Structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced.
7 Buildings at the foot of Ann Street on the river side of the flood wall will flood as water overtops the Rio Oil Company dock. Buildings on the river side of the Berwick floodwall will flood. River traffic restrictions will be strictly enforced. In addition, backwater flooding could potentially impact portions areas around Lake Palourde and Stephensville.
6 Flood stage. The city dock will be under water. Water will cover the lower end of Belleview Front Street in Berwick. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
5 Floodwall gates will be closed to protect against higher stages. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
4 Action stage. Water will move up the bank and across access roads below the city dock. Floodwall gates should be closed by the 5 foot stage to protect against higher stages. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
About This Location Collapse

Latitude: 29.696389° N, Longitude: 91.210833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 6 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 -1.12 ft 4.88 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 0 ft 6 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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